ISOLATION OF SECONDARY TRANSFORMER WINDING CURRENT DURING AUXILIARY POWER SUPPLY GENERATION - Patent 2792059

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EP 2 792 059 A2

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(88)	Date of publication A3:
	07.08.2014

(43)	Date of publication:
	22.10.2014 Bulletin 2014/43

(21)	Application number: 12818706.9

(22)	Date of filing: 14.12.2012

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International Patent Classification (IPC):

H02M 3/335^(2006.01)

(86)	International application number:
	PCT/US2012/069843

(87)	International publication number:
	WO 2013/090777 (20.06.2013 Gazette 2013/25)

(84)	Designated Contracting States:
	AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

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Priority:

14.12.2011 US 201161570554 P

(71)	Applicant: Cirrus Logic, Inc.
	Austin, TX 78701 (US)

(72)	Inventors:
	MELANSON, John L. Austin, Texas 78703 (US) MARU, Siddharth Austin, Texas 78731 (US) DRAKSHAPALLI, Prashanth Austin, Texas 78739 (US)

(74)	Representative: Freeman, Jacqueline Carol
	WP Thompson 55 Drury Lane London WC2B 5SQ London WC2B 5SQ (GB)

(54)	ISOLATION OF SECONDARY TRANSFORMER WINDING CURRENT DURING AUXILIARY POWER SUPPLY GENERATION